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Note 14 - Stockholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
   
Common Stock
   
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
   
Number
    
Amount
    
Additional
Paid in
Capital
   
Retained
earnings
(deficit)
    
Accumulated other
comprehensive
income (loss)
    
Total
stockholders'
equity
  
Balance on June 30, 2019
    
10,663,462
     $
16,461
     $
4,195
     $
66,225
     $
120
     $
87,001
  
Exercise of Stock options
    
12,260
      
189
      
(71
 )    
-
      
-
      
118
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(1,837
 )    
-
      
(20
 )    
-
      
-
      
(20
 )
Repurchase of common stock
    
(101,816
 )    
(158
 )    
(4,828
 )    
-
      
-
      
(4,986
 )
Stock-based compensation
    
-
      
-
      
830
      
-
      
-
      
830
  
Net income
    
-
      
-
      
-
      
4,205
      
-
      
4,205
  
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
(149
 )    
(149
 )
Balances, September 30, 2019
    
10,572,069
     $
16,492
     $
106
     $
70,430
     $
(29
 )   $
86,999
  
   
Common Stock
   
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
   
Number
    
Amount
    
Additional
Paid in
Capital
   
Retained
earnings
(deficit)
    
Accumulated other
comprehensive
income (loss)
    
Total
stockholders'
equity
  
Balance on December 31, 2018
    
10,627,988
     $
15,823
     $
3,953
     $
60,810
     $
(810
 )   $
79,776
  
Exercise of Stock options
    
66,619
      
827
      
(515
 )    
-
      
-
      
312
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(20,722
 )    
-
      
(544
 )    
-
      
-
      
(544
 )
Repurchase of common stock
    
(101,816
 )    
(158
 )    
(4,828
 )    
-
      
-
      
(4,986
 )
Stock-based compensation
    
-
      
-
      
2,040
      
-
      
-
      
2,040
  
Net income
    
-
      
-
      
-
      
9,620
      
-
      
9,620
  
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
781
      
781
  
Balances, September 30, 2019
    
10,572,069
     $
16,492
     $
106
     $
70,430
     $
(29
 )   $
86,999